Poland
Thin smoked Polish sausage sticks, commonly sold as snacks.
Dry-cured ham from Montenegro, usually served thinly sliced.
Spain
Cured Iberian ham with rich, nutty flavour; best sliced thinly.
This is exactly the sort of thing I like bringing back from Bulgaria: small enough to fit in a bag, but specific enough to remind you where you bought it. Cured meats are popular holiday finds, but they are also the category most likely to get caught by changing import rules. It is also the kind of thing you can talk about when someone asks what you brought back, because there is usually a little story attached to where you found it.